Iran set up defensively frustrating La Roja, and could have come away with a famous draw had Saeid Ezatolahi's goal not been chalked off for being offside thanks to VAR.
Heading into the Group B game at the Mordovia Arena knowing they needed a win to secure their place in the Round of 16, the Iranians initially fell behind courtesy of a sublime strike from Ricardo Quaresma on the stroke of halftime.
It will, however, be no less of a shock if Iran manage victory over Portugal to send them through to the Last-16 for the first time in their history, and helping to deny Cristiano Ronaldo the trophy he so desperately craves.
Quaresma had never scored in a World Cup game; he had nine global goals in 78 previous appearances. Sign up for our month-long newsletter. One can watch the Iran v/s Portugal match on Jio TV and Airtel TV as well. Both matches will be streaming on TSN.ca. Team Melli showed plenty of spirit despite losing 1-0 to Spain.
What's at stake: Iran nearly certainly needs a win to advance to the knockout round. However, they could go through with a draw should Spain lose heavily to Morocco, as Fernando Hierro's side are on four points along with Portugal.
VAR had seen Portugal given a penalty of their own earlier in the contest. The Portuguese mastermind will be facing his native country as he aims to guide Iran through to the knockout stages.More news: The Trump administration’s plan is to reunite immigrant parents and kids …eventually
Federation Internationale de Football Association world ranking: 37. Spain v/s Morocco will be Sony Ten 2, Sony Ten 2 HD, Sony Ten 3, Sony Ten 3 HD, Sony ESPN and Sony ESPN HD.
Spain will next face host Russian Federation on Sunday in Moscow.
Back to Group B and the matter in hand. ELO world ranking: 5.
Two draws and a win saw Portugal accumulate five points from their three games, and they have been involved in some of the tournament's most eye-catching moments so far. One of the Iranian fans, Mehdi Fayez, was reportedly messaged and told to present himself outside the hotel in a bid to improve Iran's chances by disrupting the Portugal team's peace.
The five-time Ballon d'Or victor is in red-hot form, scoring four in his first two games and coming off breaking the record for the most worldwide goals scored by a European player.
Meanwhile, Spain trailed 2-1 late to the group's cellar dweller, Morocco.